Window-stay.



D. C. BRIGGS & C- 'W. DAVQCKH wmonw STAY.

APPLICATION FILED NOV. 25, 1912.

5 1 9. 1 9.... 8H my Tum m n2 m 0a P Wit/wa s wu fl W L 1% a,

D. C. BRIGGS & C. W. DAVOCK.

WINDOW STAY.

APPLICATION FILED uov;25, 1912.

Patented June 8, 1915.

' 2 SHEETS-SHEET 2.

r wIV/AV I Wz negses [2 yen 6on8 Jdamar 0, 1322294; K (Ya/an ce776%?2/401 i WW Mm UNITED STATES rn' n UFCE.

DELAMAR C. BRIGGS AND CLARENCE W. DAVOUK, OF DETROIT, MICHIGAN, ASSIG'NORS T0 DETROIT STEEL PRODUCT-S COMPANY, OF- DETBOIEIL. MICHIGAN, ACOBPORATION OF MICHIGAN.

WINDOW-STAY.

Specification 6f Letters Patent.

Application filed November 25, 1912 SerialMWSfiM.

To all whom it may concern:

Be it known that we, DnLAMAmC. BRIGGS and CLA'RENGE W. DAVOOK, citizensof the United States of America, residing at Detroit, in the county ofWayne and State of Michigan, have invented certain new and usefulImprovements in Window-Stays, of which the following is a specification,reference being had therein to the accompanying drawings.

The invention relates to -stays or members for holding swinging windowsin difi'erent positions of adjustment, and it is the object of theinventionfirst, to provide means for securely holding a window in eachposition of adjustment and further for effectively locking the window inclosedposition.

To this end the invention consists in the construction of the stay andcoiiperating fittings as hereinafter set forth.

In the drawings :Figure 1 is a perspective view of a swinging window,partly open and provided with the stay. Fig. 2 is a vertical crosssection, showing theengagement ,of the stay bar with the window frame.Fig. 3 is an elevation of a portion of the frame, showing the notchesfor engaging the stay. Fig. 4 is a vertical section show-.

ing the stay arranged to lock the windowin closed position. Fig. 5 is asimilar view showing a modified arrangement of arts. Fig. 6 is a planview of Fig. 4'. Fig. is a plan view of Fig. 5. Fig. 8 is an elevationof the stay bar. Fig. 9 is a side elevation partly in section taken atright angles to* Fig. 3.

A is a window sash or. frame provided with a swinging section or transomB, bothparts being preferably of metallic construetion; C is a stay barwhich is pivotally se-' cured to a bracket D at'thelower end of theswinging sash, and is notched for e11-- gagement with a flange E at thelower edge,

of the window opening. 7

A notched stay bar such as described can be used to hold the window-atdifferent angles by an adjustment which brings different notches in thebar into engagement with the flange E. It has been found'however thatwhere the bar is merely notched the swinging sash will not be securelyfastened in its different positions of adjustment. We have thereforedevised a construction which guards against the possibility ofaccidental disengagement, comprising an undercut notch F in the: stay,which forms a pointed tooth G adapted toengage with a recess H inthe-flange E. This recess H may be formed by a round hole bored in theflange, and to guide the stay in relation thereto a notch I is formed inthe flange E, with which the edge of the stay bar is in constantengagement. .Thus whenever the window is adjusted into a differentangular position, thebar Cis'. raised to disengage the tooth G from therecess H, and after adjustment the reengagement of said tooth with therecess will lock the parts from accidental disengagemenia The stay bar"is preferably formed of a T section, the stem portion of which isprovided with notches F, while at the securing end the head portion ofthe T is cut away at J to permit the pivotal attachment of the barbetween fu-rcations of the bracket D. These furcations are preferablyformed by separate plates D and D which are-riveted Patented June8,1915.

upon opposite sides of the-web K of one of the bars of the swinging sashB, as shown in Fig. 8. The bracket D extends sufficiently to permit thestay bar to extend "ver tically adjacent to the inner side of the sashas shown in Figs-4 and 5, when the window is to be locked in closedposition. It isdesirable when the window is closed to prevent anyrattling, which we have accomplished by forming an inclined slot C inthe stay 6, which engages the pivot D in the bracket D' and permitslongitudinal adjustment of thestay" thereon. The arrangement is suchthatwhen the stay is in" vertical position a longitudinal adjustmentthereof will cause the inclined edge of the slot 0 to operate as awedge, drawing the swinging sash into" tight contact with the flange E'of the stationary frameand preventing rattling. The same effect will beproduced whether the ,bar extends downward or upward from the bracket D,"as in either case a wedge action is obtained. For securing the staybarin this" vertical position .a keeper is provided which may be eitherarranged. upon the swinging sash as shown in Fig. 4,

or upon the stationary sash as shown in Fig; 5.- The keeper L ispreferably formed of a sheet metal blank,- notched to receive the crosssection of the T stay bar C, with an entrance slot suflicienttQ-li-ceive onlythe stem portion of said bari *To engage the bar withthis keeper 9. portion of the T head M is notched or cut away at N so asto permit entrance of the bar through the slot in the keeper. Thevertical movement-of the bar then permitted by the slot C will enga ethe head M with'the correspondingly 't shioned recess in the keeper andwill thus positively lock the sash from movement.

The construction of the keeper L on the stationary sash is similar tothe keeper L on the swinging sash, with the exception that the recessfor the T head of the stay bar is turned in the opposite direction, andif desired the keeper may be formed in two sections upon opposite sidesof this recess, which sections are separately riveted to the metallicbar of the sash.

The free end of the stay bar C is preferably formed with a hook O whichmay bev formed by bendingthe T head portion of the bar, the stem portionbeing cut away.

In use, when the swinging sash is open the stay bar 0 will be turned toextend transversely of the'plane of the swinging sash, and in thisposition will be held by the bracket D from longitudinal adjustment uponthe pivot pin D Rattling of the partsv may be revented by forming therounded end o the stay bar of a radius equaling the space between thepivot pin D and the bottom of the slot between the furcation of thebracket D; or in other words, the edge of the sash bar to which themembers D and D are secured. Thus the stay bar will be held fromlongitudinal movement whenever it is used for holding the sash in openposition, but in closed position when it is arranged parallel to theplane of the sashit is free to be adjusted longitudinally of the slot Cand to operate as an anti-rattling wedge as has been already described.

What we claim as our invention is:

1. A'window stay comprising a bar having dove-tail notches in the edgethereof, a stationaryflange for engaging said notches, having anaperture therein for interlocking with the portion of said bar adjacentto the dove-tail notches.

2. A window stay comprising a bar having dove-tail notches formed in theedge portions thereof, a stationary flange for engagement with saidnotches, having a'notch lar edge portion of the notch in said bar.

3. The combination with a swinging window sash of a stay bar pivotallyattached to said sash and longitudinally adjustable upon its pivot whenin parallelism with the ment.

4. The combination with a swingingwindow of a stay therefor, comprisinga notched bar having a flanged head, said bar being pivotally attachedto said swinging window and adjustable longitudinally upon its pivotwhen in parallelism with the sash,

a keeper apertured to correspond to the cross section of said bar andits flanged head, having an entrance slot of lesser width, said barhaving its head portion cutaway at one point for engagement with saidentrance slot and interlocking with the keeper upon longitudinaladjustment from its entrance position.

5. The combination with a swinging window sash of a stay pivotallyattached thereto, and comprising a bar of T-shaped cross section, thestem of said T being provided with a notched edge and the T-shaped headbeing cut away at one point, a flange with which said notched edge isengaged to hold the window in different positions of angular adjustment,and a keeper for engagement with said bar when in parallelism with saidsash, apertured to correspond to the cross section of said bar, andhaving an entrance slot for engaging said bar at the point where thehead is cut away, and

means permitting the longitudinal adjustment of said 'bar when engagedwith sald keeper to lock the same.

6. The combination with a swinging window sash, of a seat pivotallyattached to said sash and provided with a longitudinal slot for engagingthe pivot, and a'keeper with which said seat is adapted to interlock,said slot being at an angle to the edge of the bar whereby longitudinaladjustment of the seat when in parallelism with said sash will cause awedging of the sash to its seat.

7 A window stay comprising a bar having notches in the edge thereof anda stationary flange for engaging said notches,

having an aperture therein for inter-lock-.

ing with the portion of the said bar, adjacent to the notches when theflange engages said notches.

In testimony whereof we afiix our signatures in presence of twowitnesses.

DELAMAR C. BRIGGS. CLARENCE W. DA'VOGK. Witnesses:

WM. J. BELKNAP, JAMES P. BARRY;

